BS EN ISO 8988:2006 PDF

Plastics. Phenolic resins. Determination of hexamethylene-tetramine content. Kjeldahl method, perchloric acid method and hydrochloric acid method

First page of standard BS EN ISO 8988:2006

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Title (English):

BS EN ISO 8988:2006

Plastics. Phenolic resins. Determination of hexamethylene-tetramine content. Kjeldahl method, perchloric acid method and hydrochloric acid method

Document status:: Active
Format:: Electronic (PDF)
Publication date:: October 31, 2006
ICS:: 83.080.10
Technical committee:: CEN
SKU:: BS EN ISO 8988:2006

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Abstract

1 Scope This International Standard specifies three methods for the determination of the hexamethylenetetramine (“hexa”) content of phenolic resins. The three methods are equivalent. The Kjeldahl method described in Clause 3 is not applicable if there are other components containing nitrogen in the phenolic resin. The perchloric acid method and the hydrochloric acid method described in Clause 4 and Clause 5, respectively, are only applicable if there are no other basic or acidic additives in the resin. If the resin contains additives which can be oxidized by perchloric acid, only the hydrochloric acid method (Clause 5) is applicable.

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Abstract

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